Two manufacturers of the same type of .45 ACP ammunition are shown in the picture at the right.
Each pattern was generated at a distance of 8 inches using the same firearm. Though the diameter of the patterns is about the same, note that the concentration of the powder residues is quite
different. Some ammo is “cleaner-burning” than others.
Use the same ammunition and same firearm AND know the treatment of the target since the shooting.